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MS SQL Server MCP Server

MS SQL Server MCP Server

by PiyapatRag
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

mssql_list_databases

Read-onlyIdempotent

Retrieve a list of all databases on a SQL Server instance, including their state, recovery model, compatibility level, and creation date.

Instructions

List all databases on the SQL Server instance with state, recovery model, compatibility level, and creation date.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "mssql_list_databases"
  }
}

Input Schema

NameRequiredDescriptionDefault
response_formatNoResponse format (default: markdown)markdown

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.0.1

TDQS

A3.8/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate readOnly and idempotent. Description adds specifics about returned data (state, recovery model, compatibility level, creation date), beyond annotation details.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, no redundant words, efficiently conveys tool action and output contents.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple list operation, description covers key output attributes. No output schema, but return values are implied. Slightly lacking in specifying that it returns a list.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Only one parameter (response_format) with 100% schema description coverage. Tool description adds no additional parameter meaning beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states 'List all databases' with specific attributes (state, recovery model, etc.), distinguishing it from sibling tools like mssql_list_tables or mssql_get_schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool versus alternatives like mssql_get_schema or mssql_analyze_storage, and no exclusion criteria provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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